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Finding the Fourth Proportional to 660,975.40, 912,143.64 and 374,550.22

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Solution

The fourth proportional to 660,975.40, 912,143.64 and 374,550.22 is: 516,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,975.40 : 912,143.64 = 374,550.22 : x
  2. Step 2: Convert to fraction form
    660,975.40/912,143.64 = 374,550.22/x
  3. Step 3: Cross multiply
    660,975.40x = 912,143.64 × 374,550.22
  4. Step 4: Simplify right side
    660,975.40x = 341,643,601,033.60
  5. Step 5: Solve for x
    x = 341,643,601,033.60/660,975.40
  6. Step 6: Final answer
    x = 516,877.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.